Smoking-pipe.



No. 856.045. PATENTED JUNE 4, 1907. R. G. PLIN-G.

SMOKING PIPE.

APPLICATION FILED MAY 31. 1906. v

Wzfizeases Q I I 17227022592: 52/ w. Bairififlzzg UNITED STATES PATENTOFFICE.

ROBERT c. FLING, OE sT. PAIIIJ, WIKININESOTA, ASSIGNOR OF ONE-HALF TGODFREY L. MOHRBACHER, OF COLOGNE, MINNESOTA.

SMOKING-PIPE.

Specification of Letters Patent.

Patented June 4, 1907.

Application filed May 31,1906. Serial N0- 319,553.

To all whom it may concern.-

Be it known that I, ROBERT G. FLING, a citizen of the United States,residing at St. Paul, in the county of Ramsey and State of Minnesota,have invented certain new and useful Improvements in Smoking-Pipes and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to smoking pipes and has for its Object to providean improved device for preventing the saliva from running from the mouthinto the bowl of the pipe; and to the above ends the invention consistsof the novel devices and combinations of devices hereinafter describedand defined in the claims.

The improved pipe is illustrated in the accompanying drawings, whereinlike characters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 shows the improved pipe in sideelevation; and Fig- 2 is a horizontal section taken on the line 00 c ofFig. 1, some parts being left in full.

The numeral 1 indicates the bowl; the numeral 2 the integrally formedstem, and the numeral 3 the mouth-piece of the pipe, which mouth-piece,as is usual, is detachable from the pipe stem.

The numeral 4 indicates the perforated ferrule which is placed on theend of the stem 2.

Broadly stated, my invention consists in providing a spiral draftpassage within the pipe stem, the stem in this sense being used toinclude not only the stem portion 2, but the mouth-piece also. This'spiral draft passage may be constructed in a good many different waysand it may be located entirely within the mouth-piece or entirely withinthe stub stem of the pipe, but preferably is arranged in part withinboth. To this end, the stem portion 2 has its smoke passage 5 enlargedat 6, and the mouth-piece 3 has its smoke passage 7 enlarged at 8.

The numeral 9 indicates a screw-threaded or spirally formed couplingplug which has large threads and deep channels between its threads. Theperipheral portions of the threads thereof are brought to a sharp edge,and these peripheral-portions engage shallow internal threads formed inseats or enlargements 6 and 8 of thestem and mouth-piece, respectively.A spiral smoke passage 10 is thus formed within the stem and mouthpieceat the bottom of the spiral channel formed between the threads of thecoupling plug 9. With this arrangement, the air will freely pass fromthe stern of. the mouth-piece through the spiral passage 10, but thesaliva or other liquid, on account of its high specific gravity and itsknown tendency to resist flowing up hill, will not flow from themouthpiece into the stem and, hence, will not reach the bowl of thepipe.

The spiral coupling plug (socalled) above described, it will thus beseen, not only serves the primary purpose of this invention, but alsoserves to secure the mouth-piece to the ipe. stem.

What I claim is:

The combination with a pipe having a detachable mouth-piece, of a spiralplug having threaded engagement with the said mouthpiece and with thestem of the pipe, the threads of said plug being much deeper than theinternal threads in the said mouth piece and pipe stem, thereby forminga spiral draft passage, and the said threads serving to positivelysecure together the said pipe stem and mouth-piece, substantially asdescribed.

In testimony whereof I affix my signature in presence of two witnesses.

ROBERT G. FLING. WVitnesses ARTHUR W. SELOVER, H. D. KILGORE.

